由质点运动连续性公理导得力的连续性定理及关于质点运动轨迹的三个定理。
We can derive one theorem of the continuity of a force and three theorems about the trajectory of a particle with the particle-motion-continuity axiom.
通过摄像法得出了旋涡表面流体质点的运动轨迹、切向和轴向时均速度。
Moving path lines, tangential and axial average velocities of particles at the vortex surface are obtained by the photography method.
空间机构上许多质点的运动轨迹可能具有双重曲率。
A spatial mechanism may have particles with loci of double curvature.
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